Tire sound absorbing material crimping device

Abstract

The present invention provides a tire sound absorbing material crimping device, and more particularly, a tire sound absorbing material crimping device intended to uniformly and firmly press a sound absorbing material adhered to an inner liner portion of a tire. The tire sound absorbing material crimping device according to an embodiment of the present invention includes a fixing unit configured to align a center of a tire transported by a tire conveying unit and position the tire; a crimping unit configured to press a sound absorbing material while expanding radially toward the sound absorbing material adhered to an inner liner of the tire fixed to the fixing unit; and a motor unit connected to an upper portion of the crimping unit and configured to raise and lower the crimping unit toward the tire.

What is claimed is: 
     
       1. A tire sound absorbing material crimping device comprising:
 a fixing unit configured to align a center of a tire transported by a tire conveying unit and position the tire; 
 a crimping unit configured to press a sound absorbing material while expanding radially toward the sound absorbing material adhered to an inner liner of the tire fixed to the fixing unit; and 
 a motor unit connected to an upper portion of the crimping unit and configured to raise and lower the crimping unit toward the tire, 
 wherein the crimping unit comprises:
 a first plate having a predetermined thickness and area; 
 a plurality of main frames formed on a lower portion of the first plate and extending or contracting radially based on a central axis of the first plate; and 
 a crimping ring which connects lower portions of the plurality of main frames with each other and is configured to press the sound absorbing material to the tire by expanding or contracting a diameter thereof according to an operation of radially expanding or contracting the plurality of main frames. 
 
 
     
     
       2. The tire sound absorbing material crimping device according to  claim 1 , wherein the crimping unit further comprises a servomotor installed on the first plate, and
 the servomotor comprises a first gear formed on a lower portion thereof, and each of the plurality of main frames comprises a second gear formed on an upper one side thereof to be meshed with the first gear, such that when operating the servomotor, the plurality of main frames are radially expanded or contracted while the meshed first and second gears are rotated. 
 
     
     
       3. The tire sound absorbing material crimping device according to  claim 2 , wherein each of the plurality of main frames comprises:
 an upper frame into which a screw part of a ball screw expanding radially from the second gear is inserted; 
 a center frame extending downward from the upper frame; and 
 a lower frame expanding radially from a lower end of the center frame. 
 
     
     
       4. The tire sound absorbing material crimping device according to  claim 1 , wherein the motor unit:
 is arranged above a second plate, wherein the second plate is disposed above the first plate; and 
 comprises a motor axis comprising a drive gear and is operatively connected to a plurality of shafts extending upward from the first plate, wherein the plurality of shafts comprise a driven gear configured to mesh with the drive gear, and 
 wherein, when operating the motor unit, the plurality of shafts connected to the first plate are lowered in a longitudinal direction thereof by an operation of the drive gear and the driven gear, such that the crimping unit is moved to the tire. 
 
     
     
       5. The tire sound absorbing material crimping device according to  claim 1 , wherein the crimping ring comprises a plurality of segments connected to lower portions of the plurality of main frames, respectively, and having a predetermined curvature,
 wherein the plurality of segments comprises: 
 first segments located outside in a radial direction and having guide pins formed at both ends thereof; and 
 second segments located inside in the radial direction and having guide grooves extending in a circumferential direction, into which the guide pins of the first segment are inserted, wherein the second segments are configured to expand or contract an entire diameter of the crimping ring while the guide pins are guided along the guide grooves.